Siemens SIMATIC ET 200SP Manual page 44

Product overview
3.7 Functions
Response to overload - thermal motor model
You use this device parameter to specify how the motor starter is to respond to overload:
● Trip without restart
● Trip with restart
● Warning
A group warning Is set.
In ATEX operation, you can only parameterize fail-safe motor starters to "Trip without
restart".
Trip class
The trip class (CLASS) specifies the maximum time within which a protective device must
trip from a cold state at 7.2 x the setting current (motor protection to IEC 60947-2). The
tripping characteristics represent the time to trip as a function of the current multiple. The
continuous black line in the following diagrams illustrates the tripping characteristic curve for
three-pole symmetrical loads and for single-phase loads. The continuous red line illustrates
the tripping characteristic curve for three-pole loads when one phase fails.
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WARNING
Hazardous Voltage.
Can Cause Death, Serious Injury, or Property Damage.
When the cooling time has expired following an overload trip, and a RESET takes place,
or automatic restart has been parameterized, the machine starts up immediately if a
control command is active. People in the danger area may be injured.
Make sure that the danger area of the machine is kept clear of people.
Motor starter (3RK1308-0**00-0CP0)
Manual, 12/2016, A5E34821005002A/RS-AB/002